Fabrication of Al-SiC Metal Matrix Composites Using Two Steps Mixing in Stir Casting
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 7
Abstract
The applications of MMC are keep on growing day by day. Everyone requires a material which can fulfil the required designed strength criteria but it is mostly preferred to have a lighter material. Aluminium matrix composites (AMMCs) are demanded more likely than the other conventional materials due to their high strength to weight ratio, high corrosion resistance, high yield strength, high wear resistance and low economic. These AMMCs can provide versatile properties depending upon the chemical composition, type of reinforcement, particle size of reinforcement and finally, the method of fabrication. The problem mostly incorporated while fabrication is the non-homogeneous distribution of the reinforced phase in the molten matrix, which leads to the directionality in the properties of MMCs. The present paper is focussing on the fabrication of the Al-SiC metal matrix composites using two step mixing in the stir casting. The reinforcement particles of SiC are added into the molten Al- 6061 in two consecutive steps with 5 wt. %. each. Different properties were studied for two step mixing technique. The microstructure results shows that there is improved homogenous mixing in the MMC using two consecutive mixing steps. Also there is considerable enhancement in the hardness upto 180% to that in case of Al-6061.
Authors and Affiliations
Kulwinder Singh, Sanjeev Kumar
Keywords
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